Holley's Premium Mid-Mount LS7 complete accessory system uses a bracketless design where accessories bolt directly to the water pump for a clean, integrated look. Built for dry sump LS7 and LS3 engines, the kit includes an SFI certified damper with hard-anodized billet crank pulley, a 150-amp LT1-style alternator, an SD7 A/C compressor, and a Type II power steering pump with baffled reservoir, in black finish.
Specifications:
- Accessory Drive Style: Mid-Mount
- Engine: GM LS7 (Dry Sump)
- Alternator: 150 Amp (included)
- A/C Compressor: SD7 (included)
- Damper: SFI Certified, hard-anodized billet crank pulley (included)
- Water Pump & Pulley: Included
- Power Steering Pump, Hardline & Reservoir: Included
- Inlet Size: 35.4mm / 1.4"
- Finish: Black
- Material: Cast Aluminum
- Part Number: 20-190BK
This accessory drive is for LS7 and LS3 dry sump engine applications; note that LS427/570 GM P/N 19420191 wet sump crate engines should instead use part 20-180, 20-180BK, 20-185, or 20-185BK. The power steering pump can be used with Hydroboost systems (refer to flow specs on part 198-101).
FAQ
What engines is the Holley 20-190BK accessory system designed for?
LS7 and LS3 dry sump engine applications, in a black finish.
What's included with the 20-190BK?
An SD7 A/C compressor, 150-amp alternator, Type II power steering pump with reservoir, water pump, and an SFI certified damper with hard-anodized billet crank pulley.
Will this fit a wet sump LS427/570 crate engine?
No — wet sump LS427/570 (GM P/N 19420191) crate engines should use 20-180, 20-180BK, 20-185, or 20-185BK instead.
